Meaning of calcitriol

cal•cit•ri•ol

Pronunciation: (kal-si'trē-ôl", -ol"), [key]
— n.
  1. a vitamin D compound, CHO, occurring in humans as a hormone derived from cholesterol, that acts in the regulation and absorption of calcium.
  2. a preparation of this compound, used in the treatment of osteoporosis and bone fracture.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.